# Spiral traversal of matrix in php

Php program for Spiral traversal of matrix. Here problem description and other solutions.

``````<?php
// Php program for
// Spiral form of matrix
class SpiralView
{
public	function spiral(\$data, \$startRow,
\$startCol, \$endRow,
\$endCol, \$element)
{
// Left to right
for (\$i = \$startCol; \$i <= \$endCol && \$element > 0; ++\$i)
{
\$element--;
printf("%s", "  ".strval(\$data[\$startRow][\$i]));
}
// Top to down
for (\$i = \$startRow + 1; \$i <= \$endRow && \$element > 0; ++\$i)
{
\$element--;
printf("%s", "  ".strval(\$data[\$i][\$endCol]));
}
// Bottom right to bottom-left
for (\$i = \$endCol - 1; \$i >= \$startCol && \$element > 0; --\$i)
{
\$element--;
printf("%s", "  ".strval(\$data[\$endRow][\$i]));
}
// Bottom left to top
for (\$i = \$endRow - 1; \$i > \$startRow && \$element > 0; --\$i)
{
\$element--;
printf("%s", "  ".strval(\$data[\$i][\$startRow]));
}
if (\$startRow + 1 <= \$endRow - 1 && \$element > 0)
{
// Recursive call
\$this->spiral(\$data, \$startRow + 1,
\$startCol + 1,
\$endRow - 1, \$endCol - 1, \$element);
}
}
public static
function main(\$args)
{
// Given matrix
\$matrix = array(
array(1, 2, 3, 4, 5, 6),
array(22, 23, 24, 25, 26, 7),
array(21, 36, 37, 38, 27, 8),
array(20, 35, 42, 39, 28, 9),
array(19, 34, 41, 40, 29, 10),
array(18, 33, 32, 31, 30, 11),
array(17, 16, 15, 14, 13, 12)
);
\$row = count(\$matrix);
\$col = count(\$matrix[0]);
// Get the number of element
\$element = \$row * \$col;
\$row - 1, \$col - 1, \$element);
}
}
SpiralView::main(array());``````

Output

``  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42``

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